@无内鬼258

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Collections;


namespace WindowsFormsApplication1
{
    
    public partial class Form1 : Form
    {
        Stack num_st = new Stack(); //数字栈
        Stack oper_st = new Stack ();   //符号栈

        char[,] aq = new char[5, 5] 
        { 
        {'>','>','<','<','<'},
        {'>','>','<','<','<'},
        {'>','>','>','>','<'},
        {'>','>','>','>','<'},
        {'<','<','<','<','='}
        };
        

        public Form1()
        {
            InitializeComponent();

            oper_st.Push("#");
        }

        public int prio(string s)
        {
            if (s == "+")
                return 0;
            else if (s == "-")
                return 1;
            else if (s == "*")
                return 2;
            else if (s == "/")
                return 3;
            else
                return 4;

        }

        public double oper(string s, double num1, double num2)
        {
            if (s == "*")
                return num1 * num2;
            if (s == "+")
                return num1 + num2;
            if (s == "-")
                return num1 - num2;
            if (s == "/")
                return num1 / num2;
            return 0;
        }

        public int compare(int x, int xx)
        {
            if (aq[x, xx] == '>')
                return 1;
            else if (aq[x, xx] == '<')
                return 0;
            else
                return -1;
        }

        private void btn5_Click(object sender, EventArgs e)
        {
            txtDisplay.Text += "5";
     
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }

        private void btn1_Click(object sender, EventArgs e)
        /*加法*/
        {
            num_st.Push(txtDisplay.Text);
            //txtDisplay.Text += "+";
            if (compare(prio(oper_st.Peek().ToString()), prio("+")) == 0)
            {
                oper_st.Push("+");
                txtDisplay.Text = "";
            }
            else
            {
                double num2, num1, tempresult;
                while (compare(prio(oper_st.Peek().ToString()), prio("+")) != 0)
                {
                    num2 = Convert.ToDouble(num_st.Pop());
                    num1 = Convert.ToDouble(num_st.Pop());
                    string operation = oper_st.Pop().ToString();
                    tempresult = oper(operation, num1, num2);
                    num_st.Push(tempresult);
                }
                oper_st.Push("+");
                txtDisplay.Text = "";
            }
        }

        private void btn2_Click(object sender, EventArgs e)
        /*减法*/
        {
            num_st.Push(txtDisplay.Text);
            //txtDisplay.Text += "-";
            if (compare(prio(oper_st.Peek().ToString()), prio("-")) == 0)
            {
                oper_st.Push("-");
                txtDisplay.Text = "";
            }
            else
            {
                double num2, num1, tempresult;
                while (compare(prio(oper_st.Peek().ToString()), prio("-")) != 0)
                {
                    num2 = Convert.ToDouble(num_st.Pop());
                    num1 = Convert.ToDouble(num_st.Pop());
                    string operation = oper_st.Pop().ToString();
                    tempresult = oper(operation, num1, num2);
                    num_st.Push(tempresult);
                }
                oper_st.Push("-");
                txtDisplay.Text = "";
            }
        }

        private void btn3_Click(object sender, EventArgs e)
        /*乘法*/
        {
            num_st.Push(txtDisplay.Text);
            //txtDisplay.Text += "*";
            if ( compare ( prio(oper_st.Peek().ToString()), prio("*") ) == 0 )
            {
                oper_st.Push("*");
                txtDisplay.Text = "";
            }
            else
            {
                double num2, num1, tempresult;
                while (compare(prio(oper_st.Peek().ToString()), prio("*")) != 0)
                {
                    num2 = Convert.ToDouble(num_st.Pop());
                    num1 = Convert.ToDouble(num_st.Pop());
                    string operation = oper_st.Pop().ToString();
                    tempresult = oper(operation, num1, num2);
                    num_st.Push(tempresult);
                }
                oper_st.Push("*");
                txtDisplay.Text = "";
            }
        }

        private void btn4_Click(object sender, EventArgs e)
        /*除法*/
        {
            num_st.Push(txtDisplay.Text);
            //txtDisplay.Text += "/";
            if (compare(prio(oper_st.Peek().ToString()), prio("/")) == 0)
            {
                oper_st.Push("/");
                txtDisplay.Text = "";
            }
            else
            {
                double num2, num1, tempresult;
                while (compare(prio(oper_st.Peek().ToString()), prio("/")) != 0)
                {
                    num2 = Convert.ToDouble(num_st.Pop());
                    num1 = Convert.ToDouble(num_st.Pop());
                    string operation = oper_st.Pop().ToString();
                    tempresult = oper(operation, num1, num2);
                    num_st.Push(tempresult);
                }
                oper_st.Push("/");
                txtDisplay.Text = "";
            }
        }

        private void btnequal_Click(object sender, EventArgs e)
        {
            num_st.Push(txtDisplay.Text);
            double num2,num1,tempresult;
            while (compare(prio(oper_st.Peek().ToString()), prio("=")) != -1)
            {
                num2 = Convert.ToDouble(num_st.Pop());
                num1 = Convert.ToDouble(num_st.Pop());
                string operation = oper_st.Pop().ToString();
                tempresult = oper(operation, num1, num2);
                num_st.Push(tempresult);
                txtDisplay.Text = tempresult.ToString();
            }
        }

        private void btn04_Click(object sender, EventArgs e)
        {
            txtDisplay.Text += "4";
          
        }

        private void btn01_Click(object sender, EventArgs e)
        {
            txtDisplay.Text += "1";
        }

        private void btn02_Click(object sender, EventArgs e)
        {
            txtDisplay.Text += "2";

        }

        private void btn03_Click(object sender, EventArgs e)
        {
            txtDisplay.Text += "3";
    
        }

        private void btn06_Click(object sender, EventArgs e)
        {
            txtDisplay.Text += "6";
       
        }

        private void btn07_Click(object sender, EventArgs e)
        {
            txtDisplay.Text += "7";
 
        }

        private void btn08_Click(object sender, EventArgs e)
        {
            txtDisplay.Text += "8";
  
        }

        private void btn09_Click(object sender, EventArgs e)
        {
            txtDisplay.Text += "9";
       
        }

        private void btn_clear_Click(object sender, EventArgs e)
        {
            txtDisplay.Text = "";
            num_st.Clear();
            oper_st.Clear();
            oper_st.Push("#");
        }

        private void btnback_Click(object sender, EventArgs e)
        {
            txtDisplay.Text = txtDisplay.Text.Substring(0, txtDisplay.Text.Length - 1);
        }

        private void btnsqrt_Click(object sender, EventArgs e)
        {
            double num1, tempresult;
            num_st.Push(txtDisplay.Text);
            num1 = Convert.ToDouble(num_st.Pop());
            tempresult = Math.Sqrt(num1);
            num_st.Push(tempresult);
            txtDisplay.Text = tempresult.ToString();
        }

        private void btnreserve_Click(object sender, EventArgs e)
        {
            double num1, tempresult;
            num_st.Push(txtDisplay.Text);
            num1 = Convert.ToDouble(num_st.Pop());
            tempresult = 1 / num1;
            num_st.Push(tempresult);
            txtDisplay.Text = tempresult.ToString();
        }

        private void btnlog_Click(object sender, EventArgs e)
        {
            double num1, tempresult;
            num_st.Push(txtDisplay.Text);
            num1 = Convert.ToDouble(num_st.Pop());
            tempresult = Math.Log(num1);
            num_st.Push(tempresult);
            txtDisplay.Text = tempresult.ToString();
        }

        private void btne_Click(object sender, EventArgs e)
        {
            double num1, tempresult;
            num_st.Push(txtDisplay.Text);
            num1 = Convert.ToDouble(num_st.Pop());
            tempresult = Math.Exp(num1);
            num_st.Push(tempresult);
            txtDisplay.Text = tempresult.ToString();
        }

        private void btnsin_Click(object sender, EventArgs e)
        {
            double num1, tempresult;
            num_st.Push(txtDisplay.Text);
            num1 = Convert.ToDouble(num_st.Pop());
            tempresult = Math.Sin(num1);
            num_st.Push(tempresult);
            txtDisplay.Text = tempresult.ToString();
        }

        private void btncos_Click(object sender, EventArgs e)
        {
            double num1, tempresult;
            num_st.Push(txtDisplay.Text);
            num1 = Convert.ToDouble(num_st.Pop());
            tempresult = Math.Sin(num1);
            num_st.Push(tempresult);
            txtDisplay.Text = tempresult.ToString();
        }

        private void btntan_Click(object sender, EventArgs e)
        {
            double num1, tempresult;
            num_st.Push(txtDisplay.Text);
            num1 = Convert.ToDouble(num_st.Pop());
            tempresult = Math.Tan(num1);
            num_st.Push(tempresult);
            txtDisplay.Text = tempresult.ToString();
        }

        private void btnasin_Click(object sender, EventArgs e)
        {
            double num1, tempresult;
            num_st.Push(txtDisplay.Text);
            num1 = Convert.ToDouble(num_st.Pop());
            tempresult = Math.Asin(num1);
            num_st.Push(tempresult);
            txtDisplay.Text = tempresult.ToString();
        }

        private void btnacos_Click(object sender, EventArgs e)
        {
            double num1, tempresult;
            num_st.Push(txtDisplay.Text);
            num1 = Convert.ToDouble(num_st.Pop());
            tempresult = Math.Acos(num1);
            num_st.Push(tempresult);
            txtDisplay.Text = tempresult.ToString();
        }

        private void btnatan_Click(object sender, EventArgs e)
        {
            double num1, tempresult;
            num_st.Push(txtDisplay.Text);
            num1 = Convert.ToDouble(num_st.Pop());
            tempresult = Math.Atan(num1);
            num_st.Push(tempresult);
            txtDisplay.Text = tempresult.ToString();
        }

        private void btn0_Click(object sender, EventArgs e)
        {
            txtDisplay.Text += "0";
        }

        private void btnpoint_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(txtDisplay.Text))
                txtDisplay.Text = "0.0";
            else if (!txtDisplay.Text.Contains("."))
                txtDisplay.Text += ".";
        }

    }
}